Deepwater is a competitive business ethics simulation game inspired by the blowout of BP's Deepwater Horizon oil platform in the Gulf of Mexico. It is a unique experiential learning exercise in business ethics for undergraduates and graduate students. Deepwater is a dedicated business ethics simulation, not a repurposed marketing or strategy simulation. Ethics is built in, not bolted on. Colleges, universities, and companies use Deepwater to teach business ethics and develop responsible leaders.